As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS RECEIVED POST IN-FLIGHT EMERGENCY. DISASSEMBLY REVEALED THAT THE BULL GEAR SEPARATED AND BROKE THROUGH THE ACCESSORY DRIVE HOUSING. THE DEBRIS WAS THEN INGESTED THROUGH THE INLET AND TRAVELED THROUGH THE ENTIRE GAS PATHWAY CAUSING DAMAGE THROUGHOUT THE ENGINE.